From the addition of a green academy and new facilities to the loss of library hours and small class sizes, Tri-City students heading back to school this week will notice some major changes on their campuses.

Newark district students will return to class Monday, with Fremont and New Haven district students following suit Wednesday.

In Newark, students at Newark Memorial High School and Bunker Elementary School will welcome new principals. Michael Hermosillo, a former principal at several Milpitas schools, will hold the interim principal title at the high school, while Michele Brynjulson replaces Bob Chamberlain as Bunker’s principal. Chamberlain retired in June after 27 years at the school’s helm.

In Fremont, the only secondary students who can ride school buses will be those living at least three miles from campus. Last year, students living 2﻿1/2 miles from school qualified for the bus, but the change was made to save the district money.

Students also will feel the effects of budget cuts through increased class sizes. Kindergarten classrooms will jump from 20 to 30 students, with two teachers splitting the load for at least half the day, for example. Also, there will be fewer counselors at the secondary schools and reduced library access because librarians had their work hours halved.

“Some schools may have had library hours open beyond the school day before and now they may not be able to. It depends on the school, what works with their schedules,” said Steve Betando, assistant superintendent of human resources.

Despite scaling back on a number of services this year, the district also has new course offerings, such as a second green academy at Kennedy High, where students will learn about green practices in the hospitality and agricultural industries.

At Oliveira Elementary, another major change will be the implementation of a uniform policy, which a majority of parents at the school voted for last school year. It will be the only school in the district to require students to wear uniforms.

Several Fremont schools will start the year with new principals. These schools are Chadbourne, Millard and Oliveira elementary schools and Hopkins and Walters junior high.

In the neighboring New Haven school district, James Logan High will be led by a new principal for the second year in a row. Amy McNamara-Furtado previously served as principal at San Leandro High for five years.

Also for the second year in a row, Cesar Chavez Middle School in Union City has switched its address. The school will open at its original Hop Ranch Road campus on Wednesday, after relocating temporarily to the old Barnard-White Middle School campus last year while the original Cesar Chavez campus underwent modernization.

Its new bus routes are posted on the district’s Web site, www.nhusd.k12.ca.us, under the “For our parents” link.

The $15.5 million renovation project — the school’s first major renovation since it was built in 1975, included updates to the main building, installing a room-controlled air-conditioning system, soundproofing rooms and bringing in “teaching walls” — cabinets concealed by white boards on which teachers can write. Additionally, a new gymnasium was built, and a weight room is slated to open in October.

Orientation was held last week to familiarize students with the campus. Teachers have spent the past two weeks setting up their classrooms, Principal Alberto Solorzano said.

“It’s getting down to the wire in terms of getting everything ready for the kids,” he said. “But we will open on time.”

Three women have told the New York Times that music mogul Russell Simmons raped them, the latest in a cascade of serious allegations of sexual misconduct against powerful men in entertainment, media, politics and elsewhere.